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Technical Zone

1.3k Topics 11.6k Posts

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  • Suspension Related

    102 771
    102 Topics
    771 Posts
    CalumC
    Due to the exposure that these bearings receive, it's recommended to grease them. The bearings themselves are exposed to a grease nipple so you should be able to just apply grease through their nipples directly.

  • Exhaust Related

    66 581
    66 Topics
    581 Posts
    CalumC
    I can't say I am very familiar with thise pipes sadly. I have been away from the tuning scene for these bikes for many years now. It's been years since I've even ridden my DT to be fair.

  • Framework Related

    87 609
    87 Topics
    609 Posts
    C
    Hi, thanks for the help it's a 1998, the one I have goes into the intake boot with a peice of tube which I would guess and say is around 250mm in length then the chamber sat on top. Will get some photos tonight

  • Wheel Related

    83 749
    83 Topics
    749 Posts
    R
    Just measure from the inside of the fork leg to the rim on each side, +-2mm should be ok I think. If you release the nuts on the axle clamp on the right side (if I remember correctly) and pump the front suspension up and down, and then re-tighten, it should not bind. If the seals wear out too quickly, I would check the surface of the fork tubes, so they are not damaged (pitted from rust, flaking chrome etc.)

  • Electric Related

    271 2k
    271 Topics
    2k Posts
    D
    Not sure if that's correct or pics have worked? If it has then will upload some pics of before I got it and started stripping it. [url=https://postimg.cc/8jyytSNk][img]https://i.postimg.cc/8jyytSNk/20260718-161938.jpg[/img][/url] [url=https://postimg.cc/Vd77D8m1][img]https://i.postimg.cc/Vd77D8m1/20260718-162022.jpg[/img][/url] [url=https://postimg.cc/dLQH21Pv][img]https://i.postimg.cc/dLQH21Pv/Screenshot-20260717-181434-e-Bay.jpg[/img][/url]

  • Brake Related

    70 459
    70 Topics
    459 Posts
    CalumC
    Do you mean dual piston caliper? Or do you want two calipers 🤭 https://ebay.io/m/yOnXyn Or have one made using Nevs design [image: 27961158925_26ab4db984_c.jpg] https://dt125r.co.uk/topic/1343/dt125-front-brake-caliper-bracket-dimensions/2?_=1772783708212

  • Engine Related

    554 5k
    554 Topics
    5k Posts
    CalumC
    Oh that's a relief. You just need to source a new swinging arm bolt? That's so peculiar that it seized that bad! Lots of grease when rebuilding it now I guess.
  • SpannersS

    3BN CDI

    4
    0 Votes
    4 Posts
    1k Views
    J
    Why not make adaptor/converter loom, between the cdi and the main loom, so you can connect everything up without molesting either part.
  • declanD

    Snorkel out flat power curve?

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    4 Posts
    1k Views
    J
    Removing the snorkel affects the jetting, so jet accordingly. It can also decrese the low end a bit, as theres not much velocity through the carb when you whack the throttle open at low speed. IMO the airbox seems pretty restrictive, so removing the snorkel adds tons of air. You can be both rich and lean, as in lean in the midrange, and rich on the mainjet, or the other way around.
  • Bilbo25ukB

    Chain roller problem

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    0 Votes
    10 Posts
    3k Views
    Yamboy46Y
    Cheers calum got that sorted now bud. Thankyou
  • declanD

    Pv adjustment help

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    0 Votes
    42 Posts
    11k Views
    J
    Is the servo disconnected? They can act up aswell due to corrosion and such.
  • declanD

    Carb clean abs rebuild help

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    0 Votes
    33 Posts
    8k Views
    F
    Ahh fair enough then. Every bike is different lol
  • D

    What is causing my bike to overheat?

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    0 Votes
    13 Posts
    4k Views
    D
    You guys have given me a lot to work with... No, I definitely won't be riding it anywhere when it's running like this. I'll print off this whole thread and show it to my friend who knows a lot more about bikes than me... Thanks
  • declanD

    Bleeding hydraulic clutch?

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    13 Posts
    3k Views
    Glynn123G
    Will have a shot of it over this winter, got big plans for the old DT in the next few months so will report back
  • declanD

    Coolant overflow leaking

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    0 Votes
    25 Posts
    8k Views
    CalumC
    @irongamer727 You probably won't gain higher revs, as unfortunately, the ability to rev higher is lost with the bigger bore. But yes, you will be able to dial in the ignition much more towards the bigger cylinder. I'd have thought there would be some nice gains with this and the bigger bore.
  • declanD

    Redlining issue?

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    42 Posts
    11k Views
    declanD
    @ninja that’s better!
  • declanD

    Bike running fast revs

    52
    0 Votes
    52 Posts
    13k Views
    declanD
    @scrimsmustang it seems to be sorted now put a stiffer spring in
  • O

    Inlet rubber3bn/3et

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    0 Votes
    31 Posts
    8k Views
    declanD
    @ricky0115 don’t use rtv silicone it ends up in your reed cage
  • declanD

    Engine swaps for dummies!

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    13 Posts
    3k Views
    ZrakoZ
    @perithtv I've been there too few months ago. Soaking , heating etc etc nothing Take off everything possible what can restrict you in the back and chop the bolt on as much places as angle grinder let you. I had 4 cuts and lifted the pieces off. Bought brand new guts for it and there is more grease then metal on it damaged my axe on it too
  • D

    DTR 2003 Replacement Carb?

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    0 Votes
    10 Posts
    3k Views
    J
    When I bought my bike carb was leaking from overflow pipe all the time, when tank valve was open. I opened the carb and the reason was that, the float valve was upside down! I turn it to right way and overflow stop immediately!!! Check that!
  • declanD

    Oiled filters

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    6 Posts
    2k Views
    J
    Cant see why you wouldt want to get better filtration... Airfilter oil is pretty cheap, and the filter is made to flow this way. Youd' be surprised how much crap it catches when you clean it.
  • declanD

    Fuel additive safe for 2 strokes

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    9 Posts
    2k Views
    declanD
    @Calum ??
  • A

    Power Valve set up

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    4 Posts
    2k Views
    declanD
    @Zrako when I rebuilt my bike my servo would get stuck when turning on the ignition how ever I kept turning the key and it sorted its self out no problem
  • D

    Strange yvps

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    3 Posts
    1k Views
    D
    It says 3nc-00 on cdi
  • declanD

    Lingering revs and no running without choke

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    13 Posts
    3k Views
    declanD
    @Calum thanks! What revs do the the dts go to on full choke
  • K

    YVPS.

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    19 Posts
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    CalumC
    @Mightyman Nah the DTRE's were given full YPVS servos. Although you make a good point, the YPVS does shut off at 10'000 rpm as a restriction. But the point here is the build up of NoX's gases. So whilst they did shut off, the normal person would be part throttle anyway. And if you were pinning it, well you would expect it to give up eventually and this might be why.
  • declanD

    Missing oil pump nipple need help!

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    20 Posts
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    declanD
    @jgr72 if I remember I'll look at my other bike it might have the size of pipe printed on it